We would like to have our mothers walk down the aisle at our wedding together, but my MIL disagrees with that. We also thought a close family member or friend could walk in with her at the reception. She wants her "grandson" to walk her down the aisle and she wants her "step-son" to walk into the reception with her. The biggest issue with that is my FIL. He is the father of the step-son and grandfather of the grandson. MIL and FIL are divorce and FIL is estranged from his son and grandson. So we are afraid it would cause a lot of anger and hurt if we were to do this. Who normally makes these decisions?